dumpty key (shugo chara!)

An important artifact in Shugo Chara! that allows people to unlock each other's hearts so that they might understand each other's feelings and put their doubts aside. It is carried by Tsukiyomi Ikuto and allows him to character transform into Black Lynx.

It's counterpart is the Humpty Lock, which is held by Hinamori Amu.

As it's name entails, the Dumpty Key resembles a key. Notably, it has four shapes resembling hearts or even petals.

For characters from other series, this tag should only be used when this specific, canon design is featured. Do not use this tag for any unofficial designs for it.